The features of the growth of alkaline-earth halide crystals BaBrI, BaClI and SrBrI by the Bridgman method are considered. The results of the study of the scintillation characteristics of grown crystals activated by europium ions are given. The actual content of europium in crystals was determined, and the light yield and luminescence decay times were estimated, and the X-ray luminescence spectra and absorption spectra of the obtained crystals were given.

The BaBrI crystals activated by Sm2 + ions were grown by the Bridgman method. The actual samarium content in the obtained samples was determined by inductively coupled plasma mass spectrometry. The paper presents the results of a study of the optical and scintillation characteristics of the obtained crystals: photoluminescence, X-ray luminescence and absorption spectra. The light yield of the luminescence of the studied samples was estimated.